package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/***
 * 讲师管理
 * @author zh
 */
@Api(value = "讲师管理", tags = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
public class EduTeacherController {

    @Autowired
    private EduTeacherService teacherService;

    /**
     * 1 查询讲师表所有数据
     * @return
     */
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher() {
        //调用service的方法实现查询所有的操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }

    /**
     * 2 逻辑删除讲师的方法
     * @param id
     * @return
     */
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public R removeTeacher(@ApiParam(name = "id", value = "讲师ID", required = true) @PathVariable String id) {
        boolean flag = teacherService.removeById(id);
        if(flag) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    /**
     * 3 分页查询讲师的方法
     *     current 当前页
     *     limit 每页记录数
     * @param current
     * @param limit
     * @return
     */
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current, @PathVariable long limit) {
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //数据list集合

        return R.ok().data("total",total).data("rows",records);
    }

    /**
     * 4 条件查询带分页的方法
     * @param current
     * @param limit
     * @param teacherQuery
     * @return
     */
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,@PathVariable long limit,
                                  @RequestBody(required = false)  TeacherQuery teacherQuery) {
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
       // 多条件组合查询
        // mybatis学过 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,new QueryWrapper<EduTeacher>()
                .lambda()
                .like(!StringUtils.isEmpty(name),EduTeacher::getName,name)
                .eq(!StringUtils.isEmpty(level),EduTeacher::getLevel,level)
                .ge(!StringUtils.isEmpty(begin),EduTeacher::getGmtCreate,begin)
                .le(!StringUtils.isEmpty(end),EduTeacher::getGmtCreate,end)
        );
        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //数据list集合
        return R.ok().data("total",total).data("rows",records);
    }

    /**
     * 添加讲师接口的方法
     * @param eduTeacher
     * @return
     */
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher) {
        boolean save = teacherService.save(eduTeacher);
        if(save) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    /**
     * 根据讲师id进行查询
     * @param id
     * @return
     */
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id) {
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    /**
     * 讲师修改功能
     * @param eduTeacher
     * @return
     */
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher) {
        boolean flag = teacherService.updateById(eduTeacher);
        if(flag) {
            return R.ok();
        } else {
            return R.error();
        }
    }
}

